public class Example3_7 {
  public static void main(String args [] ) {
    int sum=0,i,j;
    for ( i=1;i<=10;i++) {
      if(i%2==0) {continue;}
      sum =sum +i;
    }
    System.out.println("sum="+sum);
    for(j=2;j<=5212;j++ ) {
      for(i=2;i<=j/2;i++) {
       if(j%i==0)
        break;
      }
      if(i>j/2) { System.out.println(""+j+"是素数");}
     }
}
}



